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湖嘉申航道升级改造工程,要求增加原有航道的宽度和通航净空高度,位于航道上的岂风桥决定采用整体顶升的方式抬高2.5 m,文中介绍了顶升液压系统的工作原理、支撑结构的组成形式和顶升的过程。为保证顶升的安全,还建立了三维有限元模型分析支撑系统的受力特点,并对主跨上部结构和支撑结构的应力进行了实时监测。
Lake Jiashen waterway upgrade project, requiring the original channel width and navigation clearance height, located in the fairway on the Windy Bridge decided to raise the overall elevation of 2.5m, introduced the working principle of jacking hydraulic system, The structure of the support structure and the lifting process. In order to ensure the safety of jacking, a three-dimensional finite element model was also established to analyze the force characteristics of the supporting system, and the stress of the superstructure and supporting structure of the main span was monitored in real time.